Portable copying- apparatus



UNITED STATES PATENT OFFICE.

WILLIAM VAN ANDEN, OF POUGHKEEPSIE, NEW YORK.

PORTABLE COPYING APPARATUS.

Specification forming part of Letters Patent No. 21,456, dated September 7, 1858; Reissued December 18, 1860, No. 1,100.

To all whom it may concern:

Be it known that 1, WILLIAM VAN ANDEN, of Poughkeepsie, Dutchess county, State of New York, have invented a certain new and useful Improvement in the Manufacture of Portable Copying Books or Presses; and I do hereby declare the following to be a full description of the same.

The nature of my invention or improve ments in the manufacture of portable copying books or presses, consists in the method of uniting a cylindrical removable back or holder with a copying book, by means of a concave channel or groove cut longitudinally in the face or surface of the cylinder, so that the book can be slid into, and out of the groove at a moments notice, and at the same time when adjusted in the groove, firmly held in its place during the operation of rolling on the cylinder to take a copy in the book. But to describe my invention or improvements more particularly I will refer to the accompanying drawings forming a part of this specification the same letters of reference wherever they occur referring to like parts.

Figure 1, is a perspective view of the copying book, and removable back or holder, Fig. 2, is a transverse cutsection of the same, showing the book rolled up on the back or holder.

Letter A, is the cylindrical movable back, or holder, which may be made of wood, metal, or other suitable material. Longitudinally of it, is cut or formed a concave channel or groove B. This channel or groove is made tubular, and having its longitudinal aperture much smaller than the diameter of the tube. The object of this is to form a recess below the surface of the cylindrical back or holder, so that when the back of the book C, is slid into the tubular channel or groove from either end of the cylindrical back, the thickness of book will be compressed between the converging edges of the groove, while the back will be al lowed to fill the interior of the tube, and firmly hold the two together without the intervention of additional parts to combine them.

.Vhen the book has been filled with copies or it is desirable to substitute a new book, all that has to be done is to slip the back of the book out of the groove and the change is made, thus affording great convenience in its use, and which could notbe done if the book was attached to the cylindrical back by any wedging or clamping devices.

Having now described my improvements in the manufacture of portable c0 ying presses I will proceed to set forth wiat T claim and desire to secure by Letters Patent of the United States.

hat I claim is The improved method of uniting a cylindrical removable back or holder with a copying book, by means of a concave or tubular channel cut longitudinally of the face of the cylindrical back or holder, for the purposes and substantially in the manner hereinbefore set forth.

WM. VAN ANDEN.

Witnesses:

CHARLES L. BARRITT, H. S. LINCOLN.

[FIRST PRINTED 1911.] 

